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The world's leading chocolate-growing regions, which are mainly located in West Africa and include countries like Côte d’Ivoire and Ghana, are already experiencing climate change-related weather, according to NOAA.

Global Citizen campaigns on the United Nations Global Goals, including climate action and ending extreme poverty, two goals threatened by climate change and its effect on cocoa farmers. You can take action to help accomplish the UN goals here.

In a report on Canadian news show Day 6, scientist Brigitte Laliberté of Biodiversity International said that the chocolate industry will have to adapt under the increasing threat of drought and disease.

"There is no doubt that there has to be adaptability and a change happening in some of the varieties [of cocoa] grown in different parts [of the world], and that requires global cooperation," Laliberté told Day 6..

Laliberté warned that most chocolate comes from only one variety of cocoa tree in Africa. If disease strikes one tree, an entire crop could be vulnerable. Scientists are currently researching how to make a drought-resistant variety.

"The more diversity you inject, the better your chances," says Laliberté. "Countries have to work together [...] to share diversity and see what works in different regions."

New species of cocoa tree could take years to plant and then bear fruit, she said.

Still, climate change isn’t all bad news for chocolate production. As certain regions of the world become less hospitable to cocoa, other regions will warm up and become more suited to growing chocolate beans, according to a study by the International Center for Tropical Agriculture (CIAT).

"Climate change brings not only bad news but also a lot of potential opportunities. The winners will be those who are prepared for change and know how to adapt,” the study said.

This Halloween, remember that chocolate will only be there in 40 years if we plan and ensure that it is.